SEARCH Articles Figures Tables Chelate ring nine-membered Fused nine-membered ring system Medium Size (Seven- to Nine-Membered Rings) Nine- and Ten-Membered Heterocycles Nine- and Ten-membered Rings Nine-membered enediyne Nine-membered heterocycles, aromaticity Nine-membered macrocyclic Nine-membered ring formation Nine-membered rings Nine-membered rings by Claisen rearrangement Nine-membered rings by ring contraction Nine-membered rings by ring expansions Nine-membered rings of ring destruction Nine-membered rings synthesis Ring compound nine-membered Ring construction nine-membered rings from Ring construction to nine-membered rings Ring destruction nine-membered rings formation Seven-, Eight- and Nine-membered Rings Six-, seven-, nine- and ten-membered rings